Im using unity version under 5,my computer memory or ram is 2024, but my computer is fine to work , hehehehhehehe if make some 2D game is no problem, but if any asset on 3D project maybe this loading a little longer, so it is better to use only the assets needed to make faster. but if work on 3D project HQ is vert slow

it doesnt matter on how much ramm u have its modtly about your proccesor and graphics card and i can run unity great and i have 8 gigs of ram but the thing is ramm doesnt really do much when you have a gtx 750 and a I-5 quad core proccesor